// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
#define MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULE_IMPL_H_

#include <stddef.h>
#include <stdint.h>

#include <memory>

#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/strings/string16.h"
#include "media/blink/media_blink_export.h"
#include "third_party/WebKit/public/platform/WebContentDecryptionModule.h"
#include "third_party/WebKit/public/platform/WebContentDecryptionModuleResult.h"

namespace blink {
class WebSecurityOrigin;
}

namespace media {

struct CdmConfig;
class CdmFactory;
class CdmSessionAdapter;
class ContentDecryptionModule;

class MEDIA_BLINK_EXPORT WebContentDecryptionModuleImpl
    : public blink::WebContentDecryptionModule {
public:
    static void Create(
        CdmFactory* cdm_factory,
        const base::string16& key_system,
        const blink::WebSecurityOrigin& security_origin,
        const CdmConfig& cdm_config,
        std::unique_ptr<blink::WebContentDecryptionModuleResult> result);

    ~WebContentDecryptionModuleImpl() override;

    // blink::WebContentDecryptionModule implementation.
    blink::WebContentDecryptionModuleSession* createSession() override;

    void setServerCertificate(
        const uint8_t* server_certificate,
        size_t server_certificate_length,
        blink::WebContentDecryptionModuleResult result) override;

    // Returns a reference to the CDM used by |adapter_|.
    scoped_refptr<ContentDecryptionModule> GetCdm();

private:
    friend CdmSessionAdapter;

    // Takes reference to |adapter|.
    WebContentDecryptionModuleImpl(scoped_refptr<CdmSessionAdapter> adapter);

    scoped_refptr<CdmSessionAdapter> adapter_;

    DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleImpl);
};

// Allow typecasting from blink type as this is the only implementation.
inline WebContentDecryptionModuleImpl* ToWebContentDecryptionModuleImpl(
    blink::WebContentDecryptionModule* cdm)
{
    return static_cast<WebContentDecryptionModuleImpl*>(cdm);
}

} // namespace media

#endif // MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
